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22 results for “High-speed video”
High-Speed Video Recordings of Wheel-Rail Traction Enhancement Using a Full-Scale Testing Platform - Granular Material Candidates
<p>A database of 14 high-speed video recordings of rail-sanding process using a full-scale testing platform is provided in this data note. The videos are recorded for various case studies, namely different positioning of the sander nozzle aiming at the rail, nip, and wheel with various angles, and different materials used as rail-sand. The particle velocities can be extracted from these high-speed videos using particle image velocimetry software. The spread angle of the particles as they flow out of the nozzle can also be measured with the use of image processing software. The data extracted from these high-speed recording can be utilised for calibration, validation, and verification of experimental and numerical set-ups, as well as for training artificial intelligence models.</p>
High-Speed Video Recordings of Wheel-Rail Traction Enhancement Using a Full-Scale Testing Platform - Sander Position & Angle Aimed at Nip & Wheel
<p>A database of 5 high-speed video recordings of rail-sanding process using a full-scale testing platform is provided in this data note. The videos are recorded for various case studies, namely different positioning of the sander nozzle aiming at the rail, nip, and wheel with various angles, and different materials used as rail-sand. The particle velocities can be extracted from these high-speed videos using particle image velocimetry software. The spread angle of the particles as they flow out of the nozzle can also be measured with the use of image processing software. The data extracted from these high-speed recording can be utilised for calibration, validation, and verification of experimental and numerical set-ups, as well as for training artificial intelligence models.</p>
High-Speed Video Recordings of Wheel-Rail Traction Enhancement Using a Full-Scale Testing Platform - Sander Position & Angle Aimed at Rail
<p>A database of 4 high-speed video recordings of rail-sanding process using a full-scale testing platform is provided in this data note. The videos are recorded for various case studies, namely different positioning of the sander nozzle aiming at the rail, nip, and wheel with various angles, and different materials used as rail-sand. The particle velocities can be extracted from these high-speed videos using particle image velocimetry software. The spread angle of the particles as they flow out of the nozzle can also be measured with the use of image processing software. The data extracted from these high-speed recording can be utilised for calibration, validation, and verification of experimental and numerical set-ups, as well as for training artificial intelligence models.</p>
High-Speed Camera Videos of Electrical Arc During Hot Switching Tests
<p>This repository contains high-speed camera videos showing the ignition, evolution, and extinguishing of electrical arcs generated by a single break operation. The videos were acquired to obtain a better understanding of the phenomenon of primary arcing prior to the ignition of the main arc. The electrical arcs were generated by a break operation (hot switching) between two electrodes. The static electrode is a hard-gold coated silver-nickel core rivet. The moving electrode consists of different electrical contact materials. Namely: pure silver and copper electrodes (obtained from high-purity rod material, Ag rod and Cu rod), powder metallurgically sintered silver and copper reference samples (Ag0 and Cu0), as well as carbon nanotube reinforced metal matrix composites (Ag1, Ag2, Ag, Cu1, Cu2, and Cu3, where the number indicates the weight percentage of carbon nanotubes). Well-established reference materials were also recorded, i.e., Ag-Ni 90-10, Ag-SnO2 92-8, Ag-SnO2 90-10, and Ag-SnO2 88-12. The electrical load consisted of four 50 W conventional automotive halogen lamps (direct current).</p>
Integrating high-speed videos in capture-mark-recapture studies of insects
<p>Capture-mark-recapture (CMR) studies have been used extensively in ecology and evolution. While it is feasible to apply CMR in some animals, it is considerably more challenging in small fast-moving species such as insects. In these groups, low recapture rates can bias estimates of demographic parameters, thereby, handicapping effective analysis and management of wild populations. Here we use high-speed videos (HSV) to capture two large dragonfly species, <em>Anax junius</em> and <em>Rhionaeschna multicolor,</em> that rarely land and, thus, are particularly challenging for CMR studies. We test whether HSV, compared to conventional "eye" observations, increases the "resighting" rates and, consequently, improves estimates of both survival rates and the effects of demographic covariates on survival. We show that the use of HSV increases the number of resights by 64% in <em>A. junius</em> and 48% in <em>R. multicolor</em>. HSV improved our estimates of resighting and survival probability which were either under- or overestimated with the conventional observations. Including HSV improved credible intervals for resighting rate and survival probability by 190% and 130% in <em>A. junius</em> and <em>R. multicolor,</em> respectively. Hence, it has the potential to open the door to a wide range of research possibilities on species that are traditionally difficult to monitor with distance sampling, including within insects and birds.</p>
High-speed videos for the paper "The role of secondary recoil leaders in the formation of subsequent return strokes"
<p>This page contains high-speed video files as .cine files, that can be watched frame by frame to reproduce the analysis done in the paper titled "The role of secondary recoil leaders in the formation of subsequent return strokes", submitted for publication in Geophysical Research Letters.</p> <p><em>Instructions to watch the videos</em>: <strong>UP 44.cine </strong>and<strong> UP 154.cine:</strong></p> <p>Download and use the software Phantom Camera Control (PCC) available at:</p> <p><a href="https://www.phantomhighspeed.com/resourcesandsupport/phantomresources/pccsoftware">https://www.phantomhighspeed.com/resourcesandsupport/phantomresources/pccsoftware</a></p> <p>The Phantom Camera Control (PCC) software is compatible with Windows 7 Pro and Windows 8.1 and Windows 10, for both 32 and 64-bit operating systems.</p> <p>It is important to highlight that the time stamped on the video of the <strong>UP 44.cine</strong> is 97 ms delayed compared to the Earth Networks Total Lightning Network (ENTLN).</p>
High-speed videos for the paper "Correlation between speed of the stepped leader and peak current of the return stroke of lightning flashes"
<p>This page contains one spreadsheets with the data of the analyzed lightning flashes (.xlsx file). And it also has high-speed camera video files (.cine files) that are located inside the Lighning Flashes.rar folder. The videos can be watched frame by frame to reproduce the analysis done in the paper titled "Correlation between speed of the stepped leader and peak current of the return stroke of lightning flashes", submitted for publication in Geophysical Research Letters.</p> <p>Instructions to watch the videos: </p> <p>Download and use the software Phantom Camera Control (PCC) available at:</p> <p>https://www.phantomhighspeed.com/resourcesandsupport/phantomresources/pccsoftware</p> <p>The Phantom Camera Control (PCC) software is compatible with Windows 7 Pro and Windows 8.1 and Windows 10, for both 32 and 64-bit operating systems.</p>
High-speed video microscopy analysis of cilia before and after airway cell culture
<p>High-speed video microscopy analysis (HSVA) is a diagnostic tool used within the UK Primary Ciliary Dyskinesia (PCD) Service to access airway ciliary function on nasal brushing biopsies. The Southampton PCD group is based at the University of Southampton, Faculty of Medicine and the University Hospital Southampton NHS Foundation Trust and is led by Professor Jane Lucas. We also use air-liquid interface (ALI) culture to differentiate airway epithelial cells to regrow healthy cilia to repeat standard PCD tests (including HSVA, immunofluoresence labelling of cilia proteins, transmission electron microscopy and functional genomics) and provide PCD research samples, which also allow us to develop new diagnostic approaches. ALI-culture can restore normal ciliary movement when secondary damage (due to infection or poor cell health) temporarily causes of abnormal cilia movement or a lack of cilia. ALI-culture can also re-confirm when ciliary defects and abnormal ciliary function are permanent and cause by inherited PCD (a ciliopathy). </p>
High-speed videos for the paper "Upward bipolar lightning flashes originated from the connection of recoil leaders with intracloud lightning"
<p>This page contains high-speed video files as .cine files, that can be watched frame by frame to reproduce the analysis done in the paper titled "Upward bipolar lightning flashes originated from the connection of recoil leaders with intracloud lightning", submitted for publication in Geophysical Research Letters.</p> <p><em>Instructions to watch the videos</em>: <strong>UP 44.cine </strong>and<strong> UP 76.cine:</strong></p> <p>Download and use the software Phantom Camera Control (PCC) available at:</p> <p><a href="https://www.phantomhighspeed.com/resourcesandsupport/phantomresources/pccsoftware">https://www.phantomhighspeed.com/resourcesandsupport/phantomresources/pccsoftware</a></p> <p>The Phantom Camera Control (PCC) software is compatible with Windows 7 Pro and Windows 8.1 and Windows 10, for both 32 and 64-bit operating systems.</p>
Fracture propagation captured by high-speed camera 2: Video (configuration 4)
<p>The video presents the target plate captured by high-speed camera 2 during testing, and shows the damage for configuration 4. A line can be observed between the first and the third impact and a lighter one between the second and third impact. A deeper analysis of the three enlarged holes highlights the location of crack tips and the crack between the first and the third hole. The line between impact 1 and 3 corresponds, to a full crack formation on the plate. On the contrary, there is only an initiation of crack formation between impacts 2 and 3.</p>
Penetration and perforation process of 12.7mm FSP on plate captured by high-speed camera 2: Video (Test 2 of configuration 2).
<p>The penetration and the perforation process of configuration 2 is recorded using HSC 2. It is shown that at the moment of impact, the FSP causes a localized bulge at the rear side of the plate. A localized shearing of material, induced by the FSP front surface, is created in the contact zone. Immediately after, the FSP penetrates and a circular plug is punched through the plate, leaving a clean cut hole. Subsequently, the punched plug can be seen attached to the front surface of the projectile. After that, the punched plug is separated from the FSP.</p>
"Pitch-angle of FSP before and after ballistic impact on plate captured by high-speed camera 1: Video (configuration 2)".
<p>The figure reveals that the pitch-angle of a 12.7mm FSP both before and after the ballistic impact on an Aluminum plate is low.</p>
High-speed video observations of needles evolving into negative leaders in a positive cloud-to-ground lightning flash
<p>The data supports the manuscript entitled “<strong>High-speed video observations of needles evolving into negative leaders in a positive cloud-to-ground lightning flash</strong>”. The high-speed video data files of the positive cloud-to-ground lightning (20200603_082539, denoted F20065) of *.cihx and *.avi can be opened by Photron Camera Control software (Photron Fastcam Viewer) that can be download from this link: https://photron.com/photron-support/</p> <p>In addition, MATLAB can open the *.mat file (electric field change data), and Microsoft Excel can open the *.xlsx file (Guangdong-Hong Kong-Macao Lightning Location data (20200603082523-20200603082556).</p> <p>The data can be used freely for scientific purposes with the appropriate citation.</p>
High-speed videos of siphonophore tentilla and nematocyst discharge
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Integrating high-speed videos in capture-mark-recapture studies of insects
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Comparison between high-speed video observation of sprites and broadband sferic measurements
<p>The dataset here includes high-speed video, low-light video and broadband magnetic sferics (LF, VLF, ULF) for cases analyzed in the paper "Comparison between high-speed video observation of sprites and broadband sferic measurements".</p>
1000 fps Swimming behavioral videos (high-speed camera, in dorsal view)
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High-speed video observation of needles formed during the leader stage in a positive cloud-to-ground flash
<p>The data supports the manuscript entitled “<span>High-speed video observation</span><span> of needles formed during </span><span><span>the </span></span><span><span><span>leader</span></span></span><span><span><span> </span></span></span><span><span><span>stage</span></span></span><span> in a positive cloud-to-ground flash</span>”. The high-speed video data files of the positive cloud-to-ground lightning of *.cihx and *.avi can be opened by Photron Camera Control software (Photron Fastcam Viewer) that can be download from this link: https://photron.com/photron-support/</p> <p>In addition, MATLAB can open the *.mat file (electric field change data), and Microsoft Excel can open the *.xlsx file (Guangdong-Hong Kong-Macao Lightning Location data.</p> <p>The data can be used freely for scientific purposes with the appropriate citation.</p>
Video for the high-speed camera photos from granular flow experiments
<p>These are two video for grains mass movement derived from granular flow laboratory experiments (which generated by high speed camera photos).</p> <p>Additionally, the corresponding raw photos are also presented.</p>
Applying High-Speed Video Images to Inverse Channel Base Current Based on NARX Neural Network
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.